View Compilation Error

0_0_10137999_30131.cpp: In function `void dfs(int, std::string)':
0_0_10137999_30131.cpp:22: error: ISO C++ says that these are ambiguous, even though the worst conversion for the first is better than the worst conversion for the second:
GCC/bin/../lib/gcc/mingw32/3.4.2/../../../../include/math.h:156: note: candidate 1: double pow(double, double)
GCC/bin/../lib/gcc/mingw32/3.4.2/../../../../include/c++/3.4.2/cmath:345: note: candidate 2: float std::pow(float, float)